San Tan Tactical STT-15L Pillar Lower/Upper Receiver Set OD Green Multi-Caliber

The San Tan Tactical STT-15L Pillar is a lower and upper receiver set for building an AR-15 platform rifle. The receivers are machined from 7075 billet aluminum and finished in anodized Olive Drab Green, which provides corrosion resistance. The set is listed as multi-caliber and is intended to serve as the foundation for a semi-automatic AR-15 build.

The receiver set includes an ambidextrous bolt release for right- and left-handed shooters and bullet pictogram safety selector markings. It is designed to accept mil-spec AR-15 components. The retailer describes the machining as precision-controlled, though no specific tolerances are listed.

• Type: Lower and upper receiver set
• Platform: AR-15
• Material: 7075 billet aluminum
• Finish: Anodized Olive Drab Green
• Action: Semi-auto
• Hand: Ambidextrous bolt release
• Caliber: Multi-caliber
• Compatibility: Mil-spec AR-15 components